Cisco ICND1 1.1: Fundamentals of Networking

Overview/DescriptionTo understand how networks function, it is important to gain a basic understanding of the major components of a network. This course introduces fundamental computer and network components, as well as the characteristics, functions, benefits, metrics, and attributes used to characterize features and performance. This course also introduces the Open Systems Interconnection (OSI) and TCP/IP reference models, as well as data communications terms and concepts. Finally, this course introduces the Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) application.

Cisco ICND1 1.1: Network Connections and Communications

Overview/DescriptionData networks, including the Internet, are responsible for supplying reliable, transparent communication for people and applications. Data from applications such as e-mail, web browsers and instant messaging is packaged, transported and delivered to its destination continually. The OSI models Transport layer handles most of the addressing functions for data transmission and is responsible for end-to-end transfer of application data. This course introduces some of the main protocols that operate at the Transport layer, such as TCP, UDP, and ARP and describes the process of packet delivery.

Cisco ICND1 1.1: Switching in LANs

Overview/DescriptionLANs are a relatively low-cost means of sharing expensive resources. LANs allow multiple users in a fairly small geographic area to exchange files and messages, and to access shared resources such as file servers. LANs have rapidly evolved into support systems that are critical to communications within an organization. Properly configured and managed network devices are important tools for the efficient and safe operation of LANs. Cisco IOS Software is a feature-rich network operating system software that provides network intelligence for business-critical solutions. This course describes the challenges that shared LANs face as they confront the increasing need for bandwidth and speed to satisfy the needs of multiple users. This course also introduces the Cisco IOS Software as well as its basic configuration.

Cisco ICND1 1.1: Optimizing and Troubleshooting Switch Security

Overview/DescriptionAfter physical access has been secured, there is growing need to ensure that access to the switch via the console port and the vty ports is secure. In addition, it is important to ensure that unused switch ports do not become a security hole. And as devices are added to LANs to accommodate more users, and more networked software applications require more bandwidth, maintaining an acceptable level of network performance becomes an increasing challenge. There are a number of ways to enhance switched Ethernet LANs to meet the demands of users for performance and availability. This course describes how to secure switch ports as well as several performance-enhancement methods. This course also describes methods for identifying and resolving common switched network issues.

Cisco ICND1 1.1: Implementing Wireless LANs

Overview/DescriptionHistorically, LANs have been limited to physical wired segments. With the advent of technologies that utilized infrared and RF to carry data, LANs were freed from the limitations of a physical media. This course describes the reasons for extending the reach of a LAN and the methods that can be used to do so, with a focus on RF wireless access. With the extension of LANs, new types of applications appeared, such as VoIP. This course also briefly describes the main drivers of VoIP implementations on LANs.

Cisco ICND1 1.1: Routing and Cisco Routers

Overview/DescriptionBeyond connecting multiple devices in a network, the networks themselves can be connected. In fact, the Internet is a collection of networks that are connected. The concept of connected networks is a common communication infrastructure in large organizations. Connecting networks with diverse devices, architectures, and protocols requires more sophisticated components than simple LANs. Routers are the devices that are used in this more complex networking environment, and a suite of protocols that is known as TCP/IP governs how data is transmitted. This course describes the functions of routers in connecting networks, and describes how routers transmit data through networks using TCP/IP.

Overview/DescriptionUnderstanding the packet delivery process is a fundamental part of understanding how Cisco networking devices work. Once you have an understanding of how data travels in your network, securing and managing your resources is paramount. This course describes the process of packet delivery and then goes on to discuss data security, particularly how this is handled by Cisco’s Router and Security Device Manager. This course then goes on to describe some of the ways resources are managed, such as DHCP for addressing and the use of remote access tools to perform configuration and maintenance tasks.

Cisco ICND1 1.1: WAN Technologies

Overview/DescriptionWhen sites are located at different geographic locations, a WAN provides interconnections between the sites. There are several types of WANs, including point-to-point leased lines, circuit-switched networks, and packet-switched networks, which are discussed in this course. Routing is the process by which information gets from one location to another. It is important to understand how the various routing protocols determine IP routes. This course describes the features and operation of static routing, default routing, and Routing Information Protocol. As organizations merge, addresses sometimes become limited or addressing conflicts arise. Network Address Translation (NAT) and Port Address Translation (PAT) are two protocols that you can use to address these issues and these protocols are also described in this course.

Cisco ICND1 1.1: WAN Encapsulation and RIP Routing

Overview/DescriptionOne of the most common types of WAN connection is the point-to-point connection. A point-to-point connection is also referred to as a serial connection or leased-line connection, because the lines are leased from a carrier and are dedicated for use by the company leasing the lines. Understanding how point-to-point communication links function to provide access to a WAN is important to an overall understanding of how WANs function. This course describes the protocols that are used to encapsulate both data link layer and network layer information over serial links and how to configure them. This course also describes the basic features and operation of RIP, and explains how to enable RIP on an IP network.

Cisco ICND1 1.1: Managing the Network Environment

Overview/DescriptionThe network staff is responsible for ensuring that the underlying communications infrastructure is capable of supporting business objectives and associated applications. Network staff is also responsible for managing each device on the network according to best industry practices and for reducing device downtime. This course describes commands and processes to determine network operational status; gather information about remote devices; and manage Cisco IOS images, configuration files, and devices on a network.

Cisco ICND1 1.1: LAN Addressing

Overview/DescriptionSubnetworks, also known as subnets, are very common in all but the smallest of network environments. Subnetworks segment the network into smaller divisions that have their own addresses. Each host is represented by a unique IP address, which can be represented in either binary or decimal form for computers and users, respectively. In some cases, some of the bits that are used for the host portion of an IP address are “borrowed” to create the subnet address. The subnet mask defines which part of the IP address represents the network part. This course explains binary numbers and describes how subnets function and how they are computed.

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